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Customizing the Nº502 Mark Levinson
Deinterlacing
Deinterlacing is the process of converting the fields of an interlaced video
signal into a progressive frame. This process may introduce some image
degradation as it combines two fields. For example, since moving objects
are in a different position in each field, when the frames are put together
the moving objects don’t match up exactly, which creates a combing
effect (jagged edges that don’t line up correctly). Image flickering can also
be an issue, as well as various other video artifacts. However, the advanced
processing of the Nº502 can mitigate some of these artifacts.
The Nº502 has three types of deinterlacing formats available for selection:
Temporal Filtering -– applies a time-based filter between two or more
adjacent fields. The filter softens the image to help smooth motion
artifacts. This method is a linear deinterlacing technique.
Field Merging – combines adjacent fields using a weave-type algorithm.
This method is a linear deinterlacing technique.
Adaptive – selects the deinterlacing method based on the motion of
particular areas of the video frame. Still areas are processed differently
than areas with fast motion to provide the best overall image. This
method is a non-linear deinterlacing technique. This mode should always
be used, unless there is a specific artifact to address.
Adaptive
Threshold
Adjusts the adaptive processing applied to the video output signal. When
the parameter is selected, an adjustment bar opens with a range of 0 to 15.
The smaller numbers are better for fast moving scenes; the larger numbers
are better suited for highly detailed static scenes. This parameter is only
available if the Deinterlacing parameter has Adaptive selected.
Film Detection
Detects the presence of film-originated material so that the original
film-frame sequence may be recovered by weaving together the
appropriate video fields. This option can be turned On or Off; there are no
additional settings.
Note This parameter is most effective when the video input has not been previously
scaled or processed by the source device and is a 480i or 576i interlaced
format.
Chroma Bug
Correction
Corrects the chroma bug caused by some mpeg decoding devices. This
parameter can be turned On or Off; there are no additional settings.
Note This parameter is only effective when the video input is an interlaced format –
480i, 576i, or 1080i.
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